Sewing-machine



No. e2o,|35. Pa'f=.rrm|l Feb. 28, |899. s. G. Hows.

SEWING MACHINE.

(Application led Sept. 10, 1897.)

5 Sheets-Sheet I.

(No Model.)

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No. 620,135. Patented Feb. 23, |899.

S. G. How'E. SEWING MAcH'lNE.

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SEWING MAGHINE. (Application filed Sept. 10, 1897.)

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(No Model.)

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No. 62n,|35.

s. s. HowE. SEWING MACHINE.

(Application led Sept. 10, 1897.)

Patented Feb. 28, |899.

(No Model.)

5 Sheets-Sheet 4.

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(No Model.)

El il UNITED STATESl PATENT OFFICE.

SOLON G. IIOWE, OF DETROIT, MICHIGAN, ASSIGNOR TO JEROME WV. HYDE, OF SPRINGFIELD, MASSACHUSETTS.

SEWING-MACHINE.

SPECIFICATION forming part of Letters :Patent No. 620,135, dated February 28, 1899.

Application tiled September l0, 1897. Serial No. 651,239. (No model.)

To all whom, it may concern:

Be it known that I, SOLON G. HOWE, a citizen of the United States, residing at Detroit, county of Wayne, State of Michigan, have invented a certain new and useful Improvement in Sewing-Machines and I declare the following to be a full, clear, and exact' description of the invention, such as will enable others skilled in the art to which it appertains to make and use the same, reference being had to the accompanying drawings, which form a part of this specification.

This invention relates to certain new and useful improvements in sewing-machines,

and more particularly in overseaming glove and fur sewing machines and machines for analogous uses.

My present invention is designed more especially as an improvement on a machine of this class for which United States Letters Patent were granted toW. Ludeke,No. 275,506, dated April 10, 1883, my invention being calculated to simplify and cheapen the cost of construction of a machine of this nature, to provide a machine adapted for a greater range of work-such, for example, as for overseaming knitted underwear-to construct various parts of the machine of materials that are cheap and easily obtainable, and to construct the parts so that the least work will be reings, in which- Figure 1 is a view in vertical section, showing parts of my invention. Fig. 2 is a view in section on the line 2 2, Fig. 1. Fig. 3 is a view in section on the line 3 3, Fig. 1. Fig. 4 is a partial plan view showing parts in section. Fig. 5 is a view in section on the line 5 5, Fig. 4. Fig. 6 is a detail view of the cam for lifting the looper-bar. Fig. 7 is a detail view of the looper mechanism. Fig. 8 is a detail view of the cam O3. Fig, 9 is a view in section on the line 9 9, Fig. 3. Fig. 10 is a detail view of the friction-cap for engaging the bar carrying the outside feed-disk. Fig. 11 is an end View of the same. Fig. 12 is a detail View illustrating an adjustable cam orA eccentric, showing a modiiication. Fig. 13 is a detail view, partly in vertical section and partly in elevation, showing the spring-tension device to regulate the pressure in the feed-disks. Fig. 14 is a detail view in elevation, showing one of the adjustable caps in which the levers D6 and D8 are fulcrumed.

Fig.y 15 is a view-in section on the line A15 15,

Fig. 2. Fig. 16 is a detail View of the cam E2.

I carry out my invention as follows:

In the drawings, A represents any suitable case adapted to be supported upon a table A', said case being provided with a base-plate A2, beneath which is located the mechanism for rotating the feed-disks. The case is also provided with a top plate A3, carrying suitable tension devices and thread-holding devices.

B is a driving-shaft having its bearings in said case and provided with a driving device, as a pulley b, whereby motion may-be given to said shaft in any customary manner.

C denotes a horizontally-reciprocatin g needle-bar, said needle-bar carrying a yoke OQ provided with arms C2, engaged astride an eccentric C3 upon the driving-shaft and by which reciprocation is given to said needlebar. Said eccentric is preferably provided with peripheral flanges c4 to hold said arms in place. The needle-bar and the mechanism for driving the same are essentially the same as that shown in said Ludeke patent, and I therefore make no claim for this feature of the device herewith shown and described.

D is a looper-bar.

E denotes a slide made reciprocatory in guide-recesses of the case, as shown in Fig. 4, for example, at a, said slide being provided with a downwardly-projecting arm E', having a cam-roll e to engage in a cam-groove e of a cam-disk E2, mounted upon the drivingshaft.

Upon the looper-bar D is a bracket-arm D, sleeved upon an oscillatory arm D2. The slide E is provided with a cap E3, secured thereto in any proper manner, as by screws e2, in which the adjacent end of the arm D2 has a ball-and-socket-joint engagement, said cap being provided with a socket (indicated at e3) and said arm with a spherical or ball end d. By means of this engagement of the IOO holdin g receptacle.

G is any suitable tension device to govern the feed of the thread G to the needle C1.

D3 is a looper carried by the looper-bar, which may be of any suitable construction.

H denotes the article to be sewed engaged between the feed-disks. The arm F3 is provided with a radial needle-guide f of any suitable construction.

The looper-bar D is provided with a bearing D4, having a vertical reciprocation in the adjacent portion of the case A, said bearing having engagement with an arm D3, connected with an oscillatory lever D0, fulcrumed to the case at one end, as indicated at cZ, and provided with a cam-roll CZ3, project-ing into a cam-groove iin a cam-disk I. By this means vertical movement is given to the looper-bar. D3 is a lever fulcrumed to the case, as at d4, the opposite end being connected with a lever-arm D0, said lever being provided with a cam-roll d5, projecting into a cam-groove in a cam-disk J. The lever-arm D0 is connected with an arm D10, terminating or carrying a ball d0, through which the looper-bar D passes, the ball d0 having a socketed engagementin a portion of the case, as indicated at (Z7. In this lnanner a ball-and-socket or universal joint is provided to give a rocking movement to the looper-bar. The ball Z0 may be held in place by a cap K, engaged upon the case A, as by screws 7c. The arm D3 is held in engagement with the arm D10 in any suitable manner, as by a set-screw CZ, the opposite end entering a corresponding groove Z3 in the end of the arm D. The looper-bar D is keyed in the ball d0 by a key CZ, preventing the looper-bar from rocking or rotating except 'when actuated by the arm D10. By the combined operations of the slide E, giving to the looper-bar a horizontally-reciprocatory movement, and the action of the lever D0, giving the looper-bar a vertical reciprocatory movement, and the action of the lever D3, giving the looper-bar a rocking movement, a sextuple movement is given to the looperbar to give the required movements to the looper D3. The looper being in the position shown in Fig. l will hold the loop in position for the needle to pass therethrough, as shown in full lines in Fig. 7. The looper is then first rocked suiciently to clear the needle, as indicated in dotted lines in Fig. 7, then lifted, then given a backward horizontal movement to disengage the foot of the looper from the (shown in Fig. l) ready for the needle to pass through the next loop thus formed. -These successive actions of the looper and of the needle form the successive stitches. The requisite forward and backward movements of the looper-bar will of course be effected by the shape of the cam-groove e in the cam-disk E3. The eye of the needle is arranged vertically to be threaded from the under side.

The feed-disk F' is moved toward and away from the disk F by giving to the arm F3 a reciprocatory movement. This is accomplished by means of a bell-crank L, fulcrumed, as at Z, to the case of the machine, one end being engaged by a rod L', which may be simply hooked over the end of said bell-crank, as indicated in the drawings at L3, the adjacent portion of the bell-crank being provided with suitable lugs to hold the hook end of the rod in position. The lower end of the rod L is suitably connected with a hand-lever L3, as shown at Z2, fulcrumed upon the case, as indicated at Z3. By means of this hand-lever the horizontal movement of the arm F3 is easily7 controlled by the operator. To give suitable tension upon the feed-disk F to hold the said disk in compressed engagement with the disk F, I provide a tension-spring L1 upon a rod L5, said rod being engaged with the bell-crank L, as indicated at Z4. A hand-screw L0 is provided to give the proper tension to the spring L1, said hand-screw being preferably located on the front of the table and underneath within easy reach of the operator, so that it can be reached by the operator without leaving her seat. This handscrew may be threaded through a portion of the case, as shown.

To provide for adjustment in case of any possible wear, adjusting-screws f3 are provided, carried by brackets A3, forming a part of the case, in which brackets the arm F3 reciprocates. These screws f3 are provided with friction-rings f3 about the head of the screws, said rings bearing against the under edge of the arm F3. While the adjustingscrews have been used for this purpose, it is believed that the employment of the frictionrings f3 is novel. The reciprocation of the arm F3 would have a tendency to actuate the screwsf but the provision of the rings f3 IIS IZO

Additional antifriction-rollers ing engaged upon the lower end of said shaft.

Vtithin the recess f3 project disks M M', preferably egg-shaped andjournaled eccentrically upon a lever M2, whereby when said lever is moved in a proper direction the disks M and M' will engage in frictional contact with the vdisk F7, thereby causing the rotation of the shaft and the corresponding feed-roll. lAn opposite movement of the lever M2 will obviously release the friction-disks M and M'. An additional friction-disk Ms is provided, preferably egg-shaped, having frictional contact with the periphery of the driving-disk F7 and eccentric-ally journaled upon the case A to operate when moved in a proper direction to bind upon the periphery of the disk F7 and prevent its backward movement when the disks M and M are released. 'lo actuate the lever M2, I provide a driving-shaft with an eccentric N. A lever N' is fulcrumed intermediate its ends, as shown at n, and engages the eccentric N at one extremity, the opposite extremity engaging a lever M4, having a jointed'engagement with the lever M2, as indicated at m. The disk F7 is keyed to the shaft F2, as indicated at f5. The cap A7 is also preferably provided with an antifriction-roller F2, bearing upon the adjacent face of the arm F2. The cap A7 is provided with adjusting-screws f6. The cap A7 is held in engagement with the case by means of screws a', the cap being preferably formed with elongated orifices f7 to permit the vertical adjustment of the cap A7, as may be required. Springs m' are provided to bear against the friction-disks M and M' and M2.

To regulate the length ofthe stitch, I provide an adj usting-screw P, having a threaded engagement,with an interiorly-threaded yoke P', engaging with the lever N', as indicated at 'n'. VSaid yoke is provided with a springchamber outside the threaded portion thereof and with a spring P2 therewithin to retract the lever N' when the friction-disks M and IWI' are released, and it will be observed that by the adjustment of the screw P the lever N' will be brought more or less into a vertical position, thereby regulating the movement of the levers M4 and'M2, thereby governing the rotation of the shaft F2 and the corresponding rotation of the disk F. By this means the length of the stitches may readily be governed as desired. The adj usting-screw P is located at the front of the machine, so as to be easily reached by the operator. The spindle A4 is preferably carried by the receptacle A5. By

this means the spool may either be engaged upon the spindle or located in the receptacle, as may be desired.

The bearing D4 is preferably made rectangular in cross-section, as indicated, for example, in Fig. 4, and is vertically reciprocatory in the adjacent portion of the case A. It will be observed that all the wear comes upon the bearing,and the looper-bar is entirely relieved therefrom consequent in the up-and-down movement. Said bearing is preferably elongated also, as shown. It will be understood that the looper-bar has a reciprocatory and rocking movement in said bearing.

By means of the ball-and-socket-joint device to rock the looper-arm the combined movements of the looper-arm are permitted. The needle-bar is provided with hardened bushings Q to take the wear. The slide E is also provided with hardened friction-plates In various places, where any of the parts are journaled or fulcrumed, it is designed to provide the journals or fulcrum-pins with hardened bushings, (indicated,for example,at Q2.) The cap A7, it will be observed, is in the nature of an adjustable locking-cap holding the arm F3 in permanent engagement in the slots in the case A in which itv recprocates.

In Fig. l2 I have shown a modification in j the construction of the cams, the modication applying to any one of the cams or to either of the eccentrics upon the driving-shaft, the aim of this modified construction being to provide means for adjusting the cam or eccentricl about the shaftin order to make the parts work in proper order in relation one to another. As shown in said Fig. 12, C5is the hub, which may be, for example, the hub of the eccentric C2. B is the main driving-shaft. C' is an eccentric provided with a hub C7, sleeved upon the hub C5. The hubs C5 and CG are provided with registrable tangential orifices, (indicated at 02,) a shoulder c2 of the hub (55 projecting between said orifices. C8 denotes adjustingscrews engaged in said orifices, whereby the eccentric C6 may be adjusted circumferentiallyV about the hub C5. This may be accomplished by loosening up one of said adjusting-screws and tightening the other, as may be required. The portions of said orices form ed in the hub C5, itwill be observed, are of greater diameter than the outer ends of said orifices in the hub C7, permitting a slight adjustment of the cam C6 about the sleeve C5; j quired will not be great to ksecure the desired results. C9 denotes a locking-screw engaged in the hub C7 and projecting into a groove c4 in the hub C5 to prevent a lateral movement of the eccentric upon the shaft. The arm D5 preferably has a hooked engagement over the upper orifice of the bearingV D4, the cap d10 being removably engaged over the hooked end of said arm D5, whereby the parts may readily be disengaged and put together.

The base of the rod L5 is sleeved into the upper end of the adj usting-screw L6, which may be made tubular for this purpose, the base of said rod working freely within the said screw. It will be perceived that the spring m' bears upon the friction-disks M, M', and M3 to hold said disks against the IOO IIO

The amount of adjustment re- Y driving-disk, so that the instant they are actuated they will perform their function. The receptacle A5, forming the spool-holder, is provided With a recess or slot (indicated at a5) through which the thread may pass and whereby it is guided in its movement.

The eccentric C3 is provided with a hub C5, upon which the cam-disks I and .I are located. In order to get the parts of the machine to Work synchronously or in proper relative order,it is necessary to make the said cams adjustable from said hub. When properly adjusted, said cams may be secured and will be in desired position in any suitable manner, as by a set-screw c6. The cams I and J may either be integral, as shown, or by dividing them, as shown in dotted lines in Fig. 9, they may be made separately adjustable in case it is desired to independently adjust the two cams upon the hub of the eccentric.

The levers D6 and D8 are preferably fulcrumed in similarly constructed caps. S and S' may be vertically adjustable, as in Fig. 14, one of said caps being shown in said iigure and illustrating the construction of both, and in which the cap is shown provided with elongated recesses S2,in which the screws S3 are engaged, which connect the cap with the case A and whereby the corresponding cap may be vertically adjusted to compensate for any possible wear which may develop in the cam-rolls or cam-grooves, whereby said levers are actuated.

The arm D is engaged upon a looper-bar D by a set-screw T, projecting into a groove t upon said bar, said groove extending partly about said bar.

It will be understood that when the outer disk is thrown open by actuation of the lever L3 said lever will be thrown past the center, as indicated in dotted lines in Fig. 13, so as to hold the disk in open position until said lever is thrown back into the position shown in full lines. This may be done by the knee or hand of the operator in a ready and convenient manner.

It will be perceived that there is special advantage in actuating the levers D6 and D8 by cam-grooves in the corresponding camdisks, inasmuch as where rapid motion is required the action is positive both in lifting and in depressing said levers, as there is no opportunity for any vibration to prevent the accurate operation of the parts no matter how rapidly the machine may be in motion.

What I claim as my invention is- 1. In a sewing-machine, the combination with a pair of rotary feed-disks, a reciprocatory needle, a driving-shaft, a looper-arm, a slide, an oscillatory arm having a ball-andsocketjoint engagement with the slide, a bracket-arm upon the looper -arm sleeved upon said oscillatory slide, a cam upon the driving-shaft to horizontally reciprocate said slide and looper-arm, an oscillatory lever connected with the looper-arm, a cam upon the driving-shaft to actuate said lever and thereby give to the looper-arm an upward-anddownward movement, an additional oscillatory lever connected with the looper-arm to rock said arm, and a cam upon the drivingshaft to actuate said last-named lever, substantially as set forth.

2. In a sewing-machine, the combination with a pair of rotary feed-disks, of a reciprocatory needle, a driving-shaft, a looper-arm, a slide connected with the looper-arm, a cam upon the driving-shaft to horizontally reciprocate said slide and looper-arm, an oscillatory lever connected with the looper-arm, a cam upon the driving-shaft to actuate said level', and thereby give to the looper-arm an upward-and-downward movement, an additional oscillatory lever, an arm connected with said last-named lever at one end and having a ball-and-socket-joint connection at the opposite end with the looper-arm, and a cam upon the driving-shaft to actuate the last-named lever, substantially as set forth.

3. In a sewing-machine, the combination of a looper-arm, means to give to the looper-arm an upward-and-downward movement, means to give to the looper-arm a horizontally-reciprocatory movement, an oscillatory lever to rock said looper-arm, and lever-arms connecting said oscillatory lever and said looperarm, said oscillatory lever provided with a ball-and-socketjoint connection with .the looper-arm, substantially as set forth.

4. In a sewing-machine, the combination of a looper-arm, means to give to the looper-arm an upward-and-downward movement, means to give to the looper-arm a horizontally-reciprocatory movement, and means to rock said Ylooper-arm, said latter means having an arm provided with a ball-joint, and a corresponding socket for said ball, said looper-arm sleeved through said ball and keyed therein,

Asubstantially as set forth.

5. In a sewing-machine, a looper-arm having a combined upward-and-downward movement, a horizontally-reciprocatory movement and a rocking movement, and a ball-andsocket joint through which one end of the looper-arm is sleeved and keyed, the ball-andsocket joint permitting the adjacent end of the looper-arm to reciprocate therethrough, to have a rocking movement and to permit the opposite end of the looper-arm to have an upWard-and-downward movement, substantially as set forth.

6. In a sewing-machine, the combination of a looper-arm, means to give to the looperarm a horizontally-reciprocatory movement, means to give to the looper-arm a rocking movement, a horizontal lever to give to said arm an upward-and-downward movement, a bearing through which said arm is sleeved, and in which said arm has a rocking engagement, and a vertical arm connecting said lever with said bearing, said bearing vertically reciprocatory in the case of the machine, and

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arranged to take the wear of the upward-anddownward movement of the looper-arm, substantially as set forth.

7. In a sewing-machine, the combination of a looper-arm, means vto give to said arm an upward-and-downward movement, means to give to said arm a rocking movement, and means to give to said arm a horizontally-reciprocatory movement, said latter means provided with a slide, a bracket-arm engaging the looper-arm, and an oscillatory arm engaging the bracket-arm, said oscillatory arm having a ball-and-socket connection with said slide, substantially as set forth.

8. In a sewing-machine, the combination with a horizontally-reciprocatory and rocking looper-arm, of a bearing vertically reciprocatory in the case of the machine through which the looper-arm is sleeved, a horizontal lever, a vertical arm connecting said lever with said bearing, a driving-shaft and a cam upon said shaft to actuate said lever to give an upwardand-downward movement to the looper-arm, substantially as set forth.

9. In a sewing-machine, the combination of a looper-arm having a horizontally-reciprocatory movement and a rocking movement, of a bearing through which the looper-arm is sleeved having a verticallyreciprocatory movement in the case of the machine, an arm having a hooked engagement with said bearing, and means to vertically reciprocate said arm, said bearing provided with a removable cap located over the hooked end of said arm, substantially as set forth.

10. In a sewing-machine, the combination of a pair of feeding-disks, a reciprocatory arm carrying one of said disks, a bell-crank engaged with said arm, a rod connected with said bell-crank, and a hand-lever fulcrumed to the case of the machine connected with said rod, said lever fulcrumed to one side of the connection of said rod therewith, for the purpose described. 1

1l. In a sewing-machine, the combination of feeding-disks, areciprocatory arm carrying one of said disks, a bell-crank engaged with said arm, a rod connected with said bellcrank, a hand-lever fulcrumed to the case of the machine connected with said rod to actuate said bell-crank, a rod engaged with said bell-crank, a tension-spring upon said rod eX- erting its tension upon the bell-crank, and an adj listing-screw to regulate the tension of the spring to compress one of said disks against the other, said hand-lever fulcrumed to one side of the connection of the first-named rod therewith, substantially as set forth.

12. The combination of the feeding-disks, a main driving-shaft, a rotatable shaft carrying one of said disks, a driving-disk engaged upon the last-named shaft, an eccentric upon the main driving-shaft, a lever actuated by said eccentric to actuate the driving-disk, an interiorly-threaded yoke attached to said lever, and an adj usting-screw having a threaded engagement with said yoke to regulate tbe throw of the lever, and thereby to regulate the length of the stitch, and a spring projecting within the yoke to retract said lever, substantially as set forth.

13. The combination of the feeding-disks, a main driving-shaft, a rotatable shaft carrying one of said disks, a driving-disk engaged upon the last-named shaft, an eccentric upon the main driving-shaft, a lever actuated by said eccentric toactuate the driving-disk, an interiorly-threaded yoke attached to said lever provided with a spring-chamber outside the threaded portion thereof, and an adjusting-screw having a threaded engagement with said yoke to regulate the throw ofthe lever, and thereby to regulate the length of the stitch, said adj usting-screw provided with a spring extending into said spring-chamber to retract said lever, substantially as set forth.

14. In a sewing-machine, thecombination of a pair of feeding-disks, a reciprocatory arm carrying one of. said disks, and adjustingscrews provided with friction-rings to bear against said arm, for the purpose set forth.

l5. In combination a driving-shaft, a hub upon the shaft, a driving device provided with a hub sleeved in the first-mentioned hub, said hubs constructed with lregistrable re-` cesses and adjusting-screws engaged in said recesses, the inner 4hub constructed with a shoulder projecting between the adjacent ends of said screws, and means to prevent lateral movement of the driving device upon the inner hub, substantially as set forth.

In testimony whereof I sign this specification in the presence of two witnesses.

SOLON G. HOWE.

Witnesses:

N. S. WRIGHT, MARY HICKEY.

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